Backstage连接自建GitLab报TypeError: fetch failed求助

我正在搭建Backstage软件模板，目标是通过用户参数触发GitLab流水线，创建指定配置的Kubernetes集群。按照Backstage Scaffolder动作文档配置了gitlab:repo:push和gitlab:trigger:pipeline动作，但连接始终失败。

已完成的操作：

• 创建GitLab PAT并存储在.env文件，为Backstage后端添加dotenv包：yarn workspace backend add dotenv
• 在app-config.yaml的scaffolder.secrets中配置${GITLAB_TOKEN}作为密钥，并在template.yaml中引用
• 在package.json的yarn start脚本中添加NODE_OPTIONS=--no-node-snapshot
• 在packages/backend/src/index.ts中导入GitLab插件包和dotenv库

配置文件片段 #

template.yaml 步骤配置

steps:
    - id: generate-manifest
      name: Generate cluster manifest
      action: fetch:template
      input:
        url: ./skeleton
        targetPath: .
        values:
          clusterName: ${{ parameters.clusterName }}
          clusterType: ${{ parameters.clusterType }}
          controlPlanes: ${{ parameters.controlPlanes }}
          workerNodes: ${{ parameters. workerNodes }}
          cpuPerNode: ${{ parameters.cpuPerNode }}
          storagePerNode: ${{ parameters.storagePerNode }}
    - id: trigger-pipeline
      name: Trigger GitLab pipeline
      action: gitlab:pipeline:trigger
      input:
        repoUrl: self-hosted-gitlab.company.com/projects/backstage-clusters
        projectId: 95
        tokenDescription: Pipeline token for Backstage application access (gitlab:pipeline:trigger)
        token: ${{ secrets.pipelineToken }}
        branch: main
        variables:
          clusterName: ${{ parameters.clusterName }}
          clusterType: ${{ parameters.clusterType }}
          controlPlanes: ${{ String(parameters.controlPlanes) }}
          workerNodes: ${{ String(parameters. workerNodes) }}
          cpuPerNode: ${{ String(parameters.cpuPerNode) }}
          storagePerNode: ${{ String(parameters.storagePerNode) }}
    - id: push-manifest
      name: Commit cluster manifest to GitLab
      action: gitlab:repo:push
      input:
        repoUrl: self-hosted-gitlab.company.com/projects/backstage-clusters
        branchName: main
        commitMessage: "Add new cluster manifest for ${{ parameters.clusterName }}"
        sourcePath: .
        targetPath: clusters/${{ parameters.clusterName }}/manifest.yaml
        token: ${{ secrets.gitlabToken }}
        commitAction: update

app-config.yaml 密钥配置

gitlab:
    - host: self-hosted-gitlab.company.com
      apiBaseUrl: http://self-hosted-gitlab.company.com/api/v4
      token: ${GITLAB_TOKEN}
...
scaffolder:
  secrets:
    gitlabToken: ${GITLAB_TOKEN}

当前问题 #

尝试推送manifest到Git仓库、触发流水线均返回fetch failed错误。已尝试手动传入CA证书、修改repoUrl格式等操作，问题仍未解决。检查发现GitLab的PAT从未被调用，怀疑与证书有关但找不到相关排查资料，求下一步排查方案。

内容的提问来源于stack exchange，提问作者Keshav